Display screen or portion thereof with transitional graphical user interface for a tutorial



FIG. 1 is a front view of a first image of a display screen or portionthereof with transitional graphical user interface for a tutorial; and,

FIG. 2 is a front view of a second image thereof.

The appearance of the graphical user interface transitions between theimages shown in FIGS. 1-2. The process or period in which one imagetransitions to another image forms no part of the claimed design. Thedot-dash broken lines in the drawings illustrate a display screen whileeven broken lines illustrate portions of the graphical user interface.No subject matter shown in any of the aforementioned styles of brokenlines form part of the claimed design.

CLAIM The ornamental design for a display screen or portion thereof withtransitional graphical user interface for a tutorial, as shown anddescribed.